Habitat: Mostly dry evergreen/semi-evergreen forest on high relief terrain (500 m -1200 m) with some areas of mixed deciduous. The Nam Kading valley is dominated by broadleaf evergreen forests with a high density of large trees. Forest shows high species diversity with 83 tree species recorded in a sample of 428 individuals from two areas.

Access: Route 13 south and Route 8 skirt the southern and southeastern boundaries. There are no roads within the NPA and the rivers are not navigable. Steep, often precipitous slopes mean that access to most areas is only by foot and arduous.